A researcher in the Criminal Justice Department at Temple University was asked to conduct an evaluation
study of the Philadelphia Drug Treatment Court. In order to do this, he was given access to all drug court
participants in the last year (a total of 5000 drug-involved offenders). The researcher plans of using a 500
-case sample and to select the sample he will use a computer generated program that will select every
10th drug court participant on the list.
What type of sampling design is this?
What should the researcher do before he selects the sample (to prevent any type of sample bias)?
Can the study’s findings be generalized to all drug courts in the United States? Why or why not? Explain.
Sample Solution
